PUBLICATIONS OF SOWER, POTTS & CO., PHILADELPHIA. The uniform testimony of teachers who have introduced these grammars is, that they have been THE NORMAL SERIES OF MATHEMATICS. BY EDWARD BROOKS, A.M., PRINCIPAL AND PROFESSOR OF MATHEMATICS IN PENNSYLVANIA STATE NORMAL SCHOOL AT MILLERSVILLE. This series, still new and fresh, has had an extraordinary success, and is used in very many of the best Normal Schools, Academies, Seminaries and Public Schools in the country. Wherever the works are known they receive the highest commendations of leading professors and teachers. PRICE Brooks's Normal Primary Arithmetic. . 25 cts. The Primary contains Mental and Written Exercises for very young pupils. Its treatment is very plain, easy and progressive. PRICE Brooks's Normal Elementary Arithmetic 50 cts. The Elementary will furnish a practical business education in a shorter time and with less labor than any other, and is emphatically the work for those pupils who must be qualified for common business in one or two terms. PRICE Brooks's Normal Mental Arithmetic... 38 cts. Th. Mental is a philosophical and comprehensive treatise upon the Analysis of Numbers. It is easily mastered by young pupils, and those who accomplish it are ready to grapple with the most difficult problems. It makes logical thinkers on all subjects. All who use it say they cannot be induced to dispense with it. Brooks's Normal Written Arithmetic PRICE 95 cts. The Written is a comprehensive and practical work, full of business applications. It is admirably arranged, and progresses step by step until pupils master it almost without conscious effort. Its treatment is novel in many respects and very interesting, and as it is very successful in the school-room, it is very popular among the best educators. PRICE Brooks's Key to Mental Arithmetic. . $.38 .50 Brooks's Key to Written Arithmetic... 1.00 In addition to the matter usually contained in Keys, the first and last of these contain many valuable suggestions on the best methods of teaching Arithmetic. |